- OK, first of all before I get any flaming, I realize I've made some assumptions in my calculations but despite that it would seem that the Tab has a much better resolution than the iPad. I figure I'd throw it out here for comparison and see what you guys think.

OK, so people frequently use the term resolution to imply the number of pixels; ie 1024*600 or 1024*768, but resolution is really pixel density, so the amount of pixels per a given area. This has a functional implication, because the more pixels per square inch, then the smaller the pixels and tighter the are crowded together and thus the "smoother" they appear to the human eye.**TAB**

So first, here is the Tab:

Dimensions: 7.48*4.74

Pixels: 1024*600

-The ratio of width (a) to height (b) is approx 1024/600 (a/b) which is 1.7066666, therefore, for all variations of this screen ratio, a/b=1.706666

-next we know the diagonal (c) of of this screen is 7 inches.

-the Pythagorean Theorem states that for a right triangle, the sum of the squares of the width and height are equal to the square of the hypotenuse. So a^2+b^2=c^2. Or in this case a^2 + b^2 = 49

-if we already said that a/b=1.706666, then a=1.706666*b, so a^2=2.912* b^2

-so plugging this into the Pythagorean Theorem, 2.912 * b^2 + b^2 = 49, so 3.912 * b^2 = 49, so b^2 = 49/3.912, so b^2 = 12.523286, so b= 3.538825, or the height of the screen is 3.538825 inches

-then we can plug this into our a/b=1.706666 equation to solve for the width. a/3.538825=1.706666, so a equals 6.039592, or the width of the screen is 6.039592 inches

- so the total area of the screen (width times height) is 21.37 square inches

-so the resolution (pixel density) is total pixels/area, or (1024*600)/21.37, or 614400/21.37, or**28750 pixels per square inch****iPAD**

So next, here is the iPad:

Dimensions: 9.56*7.47

Pixels: 1024*768

-The ratio of width (a) to height (b) is approx 1024/768 (a/b) which is 1.333333, therefore, for all variations of this screen ratio, a/b=1.333333

-next we know the diagonal (c) of of this screen is 9.7 inches.

-the Pythagorean Theorem states that for a right triangle, the sum of the squares of the width and height are equal to the square of the hypotenuse. So a^2+b^2=c^2. Or in this case a^2 + b^2 = 94.09

-if we already said that a/b=1.333333, then a=1.333333*b, so a^2=1.7777* b^2

-so plugging this into the Pythagorean Theorem, 1.7777 * b^2 + b^2 = 94.09, so 2.7777 * b^2 = 94.09, so b^2 = 94.09/2.7777, so b^2 = 33.873348, so b= 5.820081, or the height of the screen is 5.820081 inches

-then we can plug this into our a/b=1.333333 equation to solve for the width. a/5.820081=1.333333, so a equals 7.760106, or the width of the screen is 7.760106 inches

- so the total area of the screen (width times height) is 45.16 square inches

-so the resolution (pixel density) is total pixels/area, or (1024*768)/45.16, or 786432/45.16, or**17414 pixels per square inch**

Here are my conclusions:

The iPad has more pixels than the Tab, 786432 vs 614400, a difference of about 28% more pixels

The iPad has a larger screen area than the Tab, 45.16 inches vs 21.37 inches, a difference of about 111% larger screen

So yes the iPad has a bigger screen, and yes the iPad has more pixels, but the more important factor of resolution goes to the Tab. It has a resolution of 28750 vs the resolution of iPad which is 17414. So the Tab has a 65% increased pixel density, and essentially a 65% sharper image quality.

Lastly, I just wanted to point out that the standard widescreen format most of us are familiar with at home is 16:9, which has a ratio of width to height of 1.777777. Which is much closer to the ratio on the Tab.

Just some info I thought you guys would be interested in. Plus Im bored at work this morning!09-27-2010 10:43 AMLike*0* - My feeling is that I'll probably get the iPad, although it's a little bigger than what I want. The main issue is that I work in the medical field and there is just more software out there for the iPad.09-29-2010 11:41 PMLike
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# Reoslution comparison between iPad and Tab

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